Patents by Inventor Weijiang Zhao

Weijiang Zhao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240038499
    Abstract: An ion source includes a vaporizer, a plasma chamber, and a controller. The vaporizer produces a reaction product by supplying, through a first gas supply line to a crucible in which a solid material is installed, a reactive gas that reacts with the solid material, and vaporizes the reaction product by heating the crucible with a heater. The plasma chamber is supplied with a vapor from the vaporizer through a vapor supply line, and has a second gas supply line connected to the plasma chamber separately from the vapor supply line. The controller controls the heater to heat the crucible while a gas is being supplied from the second gas supply line to the plasma chamber and stops a supply of the reactive gas through the first gas supply line to the crucible.
    Type: Application
    Filed: July 28, 2023
    Publication date: February 1, 2024
    Applicant: Nissin Ion Equipment Co., Ltd.
    Inventors: Yuta IWANAMI, Yuya HIRAI, Suguru ITOI, Weijiang ZHAO
  • Patent number: 11749501
    Abstract: An ion implantation apparatus includes a transfer device that transfers a wafer, a support device that supports the wafer at an implantation position, and a control device that controls the ion implantation apparatus to perform chain implantation processing on the wafer, and that controls the transfer device or the support device according to warpage information of the wafer.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: September 5, 2023
    Assignee: NISSIN ION EQUIPMENT CO., LTD.
    Inventors: Jian Wang, Shinsuke Inoue, Yuta Iwanami, Takashi Sakamoto, Weijiang Zhao
  • Publication number: 20230008178
    Abstract: A hydrogen supply device disposed in a high-potential section includes a bottle internally provided with a hydrogen absorbing alloy.
    Type: Application
    Filed: July 11, 2022
    Publication date: January 12, 2023
    Applicant: NISSIN ION EQUIPMENT CO., LTD.
    Inventors: Yuya HIRAI, Weijiang ZHAO, Suguru ITOI, Yuta IWANAMI
  • Publication number: 20220189736
    Abstract: An ion implantation apparatus includes a transfer device that transfers a wafer, a support device that supports the wafer at an implantation position, and a control device that controls the ion implantation apparatus to perform chain implantation processing on the wafer, and that controls the transfer device or the support device according to warpage information of the wafer.
    Type: Application
    Filed: September 8, 2021
    Publication date: June 16, 2022
    Applicant: NISSIN ION EQUIPMENT CO., LTD.
    Inventors: Jian WANG, Shinsuke Inoue, Yuta Iwanami, Takashi Sakamoto, Weijiang Zhao
  • Patent number: 10600608
    Abstract: An ion source is provided. The ion source includes a plasma generation chamber, a plate member, and an extraction electrode. The plasma generation chamber is supplied with a halogen-containing material. The plate member is provided on an end of the plasma generation chamber located on a side toward which an ion beam is extracted. The extraction electrode is disposed downstream of the plate member. The plate member is formed with a gas supply passage via which hydrogen gas is supplied to the extraction electrode.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: March 24, 2020
    Assignee: NISSIN ION EQUIPMENT CO., LTD.
    Inventors: Masakazu Adachi, Shigeki Sakai, Yuya Hirai, Takayuki Murayama, Tomoya Taniguchi, Weijiang Zhao
  • Patent number: 9601359
    Abstract: A substrate holding device is provided with an electrostatic chuck that has an electrode therein and is provided with a substrate holding surface, on one side of which a substrate is held; a displacement gauge that is disposed above or below the substrate holding surface; and a controller which, along with using the displacement gauge to measure a first distance to the substrate when a substrate is placed on the substrate holding surface, uses the displacement gauge to measure a second distance to the substrate after a predetermined voltage is applied to the electrode of the electrostatic chuck and, based on the difference between the measured distances, ascertains whether the clamping of the substrate to the electrostatic chuck has been performed in a normal manner.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: March 21, 2017
    Assignee: NISSIN ION EQUIPMENT CO., LTD.
    Inventors: Weijiang Zhao, Kazuki Tobikawa
  • Publication number: 20150162232
    Abstract: A substrate holding device is provided with an electrostatic chuck that has an electrode therein and is provided with a substrate holding surface, on one side of which a substrate is held; a displacement gauge that is disposed above or below the substrate holding surface; and a controller which, along with using the displacement gauge to measure a first distance to the substrate when a substrate is placed on the substrate holding surface, uses the displacement gauge to measure a second distance to the substrate after a predetermined voltage is applied to the electrode of the electrostatic chuck and, based on the difference between the measured distances, ascertains whether the clamping of the substrate to the electrostatic chuck has been performed in a normal manner.
    Type: Application
    Filed: July 17, 2014
    Publication date: June 11, 2015
    Inventors: Weijiang ZHAO, Kazuki TOBIKAWA
  • Patent number: 7635850
    Abstract: An analyzing electromagnet constituting an ion implanter has a first inner coil, a second inner coil, three first outer coils, three second outer coils, and a yoke. The inner coils are saddle-shaped coils cooperating with each other to generate a main magnetic field which bends an ion beam in the X direction. Each of the outer coils is a saddle-shaped coil which generates a sub-magnetic field correcting the main magnetic field. Each of the coils has a configuration where a notched portion is disposed in a fan-shaped cylindrical stacked coil configured by: winding a laminations of an insulation sheet and a conductor sheet in multiple turn on an outer peripheral face of a laminated insulator; and forming a laminated insulator on an outer peripheral face.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: December 22, 2009
    Assignee: Nissin Ion Equipment Co., Ltd.
    Inventors: Takatoshi Yamashita, Tadashi Ikejiri, Kohei Tanaka, Weijiang Zhao, Hideyuki Tanaka
  • Publication number: 20080135777
    Abstract: The projection distances of connecting portions of a coil are reduced, thereby enabling the size and power consumption of an analyzing electromagnet to be reduced, and therefore the size and power consumption of an ion implanting apparatus are enabled to be reduced. [Means for Resolution] An analyzing electromagnet 200 constituting an ion implanting apparatus has a first inner coil 206, a second inner coil 212, three first outer coils 218, three second outer coils 224, and a yoke 230. The inner coils 206, 212 are saddle-shaped coils cooperating with each other to generate a main magnetic field which bends an ion beam in the X direction. Each of the outer coils 218, 224 is a saddle-shaped coil which generates a sub-magnetic field correcting the main magnetic field.
    Type: Application
    Filed: October 10, 2007
    Publication date: June 12, 2008
    Inventors: Takatoshi Yamashita, Tadashi Ikejiri, Kohei Tanaka, Weijiang Zhao, Hideyuki Tanaka